After reading the Ethash wiki, I kind of get DAG is something that every node can identically generate to verify the work. However I don't get how the DAG is related to Merkle Tree. Can anyone explain ...

I don't understand quit well what are the requirements on the disk volume to run a full node of ethereum and what is its expected growth.
e.g. for now I have the following volume distribution across ...

I am a neophyte(noob) in cryptocurrencies so I'm here at stackexchange with this question, what is the difference between blockchain size and dag file size? Because what actually confused me was the ...